Amirkabir University of Technology AUT Journal of Electrical Engineering 2588-2910 Articles in Press 2026 08 01 A New Ultra Step-Up DC–DC Converter with an input continues current for Photovoltaic system 6131 10.22060/eej.2026.25634.5972 EN Akram Qasim Kadhim Almohammed Department of Electrical Engineering Technologies, Southern Technical University, Nasiriyah Technical Institute, Nasiriyah, Iraq 0009-0007-7135-7399 Majid Delshad Department of Electrical Engineering, Isf.C., Islamic Azad University, Isfahan, Iran 0000-0002-2637-5965 Journal Article 2026 03 23 This paper presents a high step-up DC–DC converter with enhanced performance characteristics suitable for low-voltage renewable energy applications. The proposed topology achieves high voltage gain over a wide duty-cycle range without imposing excessive electrical stress on semiconductor devices. Owing to its structural configuration and energy transfer mechanism, the converter exhibits low input current ripple and operates effectively in continuous conduction mode. The voltage and current stresses across the switches and diodes are significantly reduced, allowing the use of lower-rated power devices while maintaining high efficiency. The converter also features a common ground between the input and output terminals, which simplifies gate-driver design, reduces electromagnetic interference, and improves overall system safety. Its structure is straightforward and practical for implementation in renewable energy systems such as fuel cells, photovoltaic modules, and electric vehicle power systems. A 240 W laboratory prototype has been developed to validate the theoretical analysis, achieving a peak efficiency of 93.4% at rated load. https://eej.aut.ac.ir/article_6131_392526094bcba21af9fd4102ce5ed092.pdf